Thermodynamics of CO adsorption on the zeolite Na-ZSM-5 A combined microcalorimetric and FTIR spectroscopic study
文献信息
Carbon monoxide was found to adsorb, at room temperature, on Na-ZSM-5. IR spectra of adsorbed CO showed two main bands at 2176 and 2112 cm-1, which were assigned to the C–O stretching mode of Na+···CO and Na+···OC adducts, respectively. The complex structure of these bands suggested that cation sites in Na-ZSM-5 are not all identical. Further proof of the presence of slightly different cation sites was obtained by IR spectroscopy of adsorbed carbon dioxide. Microcalorimetry of adsorbed CO, in conjunction with IR spectroscopy and volumetric adsorption data, allowed a detailed thermodynamic study to be carried out on the CO/Na-ZSM-5 system. CO adsorption was found to follow a Langmuir-type isotherm. The (exothermic) adsorption process showed a differential heat of adsorption of ca. 27 kJ mol-1. The enthalpy change in the formation of Na+···CO and Na+···OC species was found to be ΔH°=-28 and ΔH°=-24 kJ mol-1, respectively, while the value of TΔS°=-41 kJ mol-1 was derived for both adsorption modes.
期刊推荐
相关文献
A hybrid coarse-grained model for structure, solvation and assembly of lipid-like peptides
Akash Banerjee, Chien Yu Lu, Meenakshi Dutt
DOI: 10.1039/D1CP04205J
A new universal force-field for the Li2S–P2S5 system
Shunsuke Ariga, Takahiro Ohkubo, Shingo Urata, Yutaka Imamura, Taketoshi Taniguchi
DOI: 10.1039/D1CP05393K
An anisotropic dressed pairwise potential model for the adsorption of noble gases on boron nitride sheets
Chris John, Rotti Srinivasamurthy Swathi
DOI: 10.1039/D1CP04815E
Microelectrode-based transient amperometry of O2 adsorption and desorption on a SrTiO3 photocatalyst excited under water
Takumu Kosaka, Tomohiro Ando, Hiroshi Nishiyama, Yuanshu Zhou
DOI: 10.1039/D1CP03264J
Effect of a single water molecule on ˙CH2OH + 3O2 reaction under atmospheric and combustion conditions
Manas Ranjan Dash, Mohamad Akbar Ali
DOI: 10.1039/D1CP03911C
Coexistence of intrinsic room-temperature ferromagnetism and piezoelectricity in monolayer BiCrX3 (X = S, Se, and Te)
Guang Song, Chengfeng Zhang, Zhengzhong Zhang, Guannan Li, Zhongwen Li, Juan Du, Bingwen Zhang, Xiaokun Huang, Benling Gao
DOI: 10.1039/D1CP04900C
Excited state photochemically driven surface formation of benzene from acetylene ices on Pluto and in the outer solar system
Yiwei Liu, Leslie A. Young, Chih-Hao Chin, Jen-Iu Lo
DOI: 10.1039/D1CP04959C
Magnetically induced ring currents in metallocenothiaporphyrins
Theo Kurten, Lenara I. Valiulina, Sergey Yu. Ketkov, Viktor N. Cherepanov, Maria Dimitrova, Dage Sundholm
DOI: 10.1039/D1CP04779E
您可能还喜欢
2-(甲基磺酰基)嘧啶-5-胺(CAS号:56621-92-2)适用哪些法规指南?
该化合物适用的法规指南包括GHS(全球化学品统一分类和标签制度)分类为特定目标器官毒性-单次接触类别3;根据欧盟REACH法规,该化合物需要进行注册和评估;在美...
在合成中是否有4-(4-氯苯基)-1H-咪唑(CAS号:35512-29-9)的替代品?
在合成中,可以考虑使用一些类似的化合物作为4-(4-氯苯基)-1H-咪唑的替代品,如4-(4-溴苯基)-1H-咪唑或4-(4-甲氧基苯基)-1H-咪唑。这些化合...
什么是N~2~-甲基丙氨酸酰胺(CAS号:32012-16-1)?
N~2~-甲基丙氨酸酰胺是一种有机化合物,其化学名为2-(Methylamino)propanamide。它是一种酰胺类化合物,分子式为C4H10N2O,相对分...
如何处理含有N-苄基-3-氨基氧杂环丁烷草酸盐(CAS号:1956341-96-0)的废料?
处理含有N-苄基-3-氨基氧杂环丁烷草酸盐(CAS号:1956341-96-0)的废料时,应首先确保遵循相关法规要求,如GHS和REACH等。通常,废液应先进行...
4-bromo-2-chloro-6-methylbenzoic acid(CAS号:877149-07-0)的物理化学性质是什么?
4-溴-2-氯-6-甲基苯甲酸是一种固体化合物,具有较高的熔点和较低的沸点。它的分子量为261.03 g/mol。该化合物在水中几乎不溶,在有机溶剂中溶解度适中...
2-[(2,5-二氯-4-嘧啶)氨基]-N-甲基苯甲酰胺(CAS号:761440-08-8)通常如何合成?
该化合物通常通过缩合反应合成,典型的方法是将2,5-二氯嘧啶与N-甲基苯甲酰胺在碱性条件下进行偶联反应。常用的碱包括NaH、LDA等强碱。该合成路线具有较高的选...
在合成中是否有3,5-二溴-4-甲基苯胺(CAS号:13194-73-5)的替代品?
3,5-二溴-4-甲基苯胺在某些合成路线中可能没有直接替代品。然而,在某些应用场景下,可以考虑使用其他类似结构的化合物如3,5-二溴-4-硝基苯胺或3,5-二碘...
2-氯喹啉-4-羧酸甲酯(CAS号:62482-26-2)的主要用途是什么?
2-氯喹啉-4-羧酸甲酯主要用于有机合成和药物合成领域,作为中间体或原料。它在合成某些药物和染料时具有重要作用。此外,该化合物还可能用于某些特定的化学研究中。
i>]吡啶(CAS号:474708-88-8)安全吗?
6-溴-8-氯咪唑[1,2-a]吡啶在操作过程中需要谨慎以确保安全。该化合物具有一定的毒性,吸入其蒸气或粉尘可能导致呼吸道刺激。处理时应佩戴适当的防护装备,如手...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![(3R)-3-(3-Fluorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoic acid structure (3R)-3-(3-Fluorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoic acid structure](https://cnstatic.chemtradehub.com/structs/500/500789-04-8-20dd.webp)


